Drink mixer



H. D. FLEGEL. M3395@ DRINK MIXER Filed Aug. 27, 1926 2 Sheets-Sheet lJaim, 5, w32., H. D. FLEGEL Lgy DRINK MIXER Filed Aug. 27, 1926 2Sheets-Sheet 2 Patented Jan. 5, 1932 UNITED STATES PATENT OFFICEHARRISON D. FLEGEL, OF RACINE, WISCONSIN, ASSIGNOR, BY MESNEASSIGNMENTS, TO HAMILTON BEACH MANUFACTURING COMPANY, F RACINE,WISCONSIN, A COR,-

POB-ATION OF WISCONSIN DRINK MIXER Application led August 27, 1926.Serial No. 131,828.

My invention relates to improvements in drink mixers, more particularlyto the motor driven type of mixers, and to flexible supporting means forthe motors of such mixers;v

but my invention is a general application to the support of devices inwhich a certain amount of Vibration is inherent, as motors of all types,and I do not wish to be limited to its use in drink mixers. In drinkmixers having al permanently attached agitator shaft of the usuallength, it is practically impossible to have this length of shaft runtrue and without vibration, and when the motor is rigidly mounted thereis excessive wear on the bearings, the machines are more or less noisyin operation, and are generally unsatisfactory.

One object of my invention is theprovision of a flexible motor supportfor the driving motor of drink mixers of this type having an agitatorshaft permanently attached to the motor shaft, thereby eliminatingexcessive wear on the bearings, the noise incident to such a motor whenrigidly supported and other disadvantages of the latter construction.

Another object vof my invention is the improvement of this type of mixerby adapting the same to be mounted on a more or less 30. rigid one piececast metal support by means of a resilient motor mounting.

Another object of my invention is the provision of a flexible andresilient motor mounting permitting a limited amount of motor vibrationin any direction.

Other objects and advantages of my invention will more fully appear fromthe acc-ompanying description and drawings, in

which several embodiments -of the invention are shown by way ofillustration, and in which similar characters of reference apply tosimilar parts.

The `invention consists in the combination of means hereinafterillustrated and particularly pointed out in the claims.

In the drawings Figure 1 is a vertical figure of the preferred form ofmy invention, showing a complete mixer.

Figure 2 is a vertical axial section of the motor mounting shown inFigure 1.

Figure 3 is a view in perspective of the disassembled parts of themounting shown in Figures 1 and 2.

Figure 4 is a similar View of a modification illustrating the use ofhelical springs and a plurality of fastening screws.

Figure 5 is a vertical elevation, partially broken away, showing amodification of my invention embodied in the straight tubular support.

Figure 6 is a vertical elevation partially bnken away, showing anothermodification, an

Figure 7 is a detailed View of another type of spring which may be usedin my invention.

Referring to Figures 1 to 4, 10 represents a rigid one-piece support,preferably formed of cast metal comprising a hollow base 11, resilientfeet 12, and a hollow goose neck standard 13. The mixer motor 14 withits stirrer shaft 15 is carried by the support 10 through the medium ofa supporting member 30 including supporting flanges 16 and screws 17.The supporting member 30 also comprises a casing for my improvedresilient mounting.

The goose neck 13 is formed with a seating surface 18, preferably aplane surface provided with a threaded bore 19, communicating with ahollow goose neck 13 and the hollow standard 10 for reception ofconduct-ors transmitting energy to the said motor. The seating surface18 is provided with a lateral annular flange 20, forming a cylindricalchamber 21 open at one end and having the bore 19 at the other end.' Theseating surface 18 is also provided with a fixed projecting pin 23extending at right angles to the said surface for a purpose hereinafterto be described. The friction plate 22 consists of a 'relatively thindisc of steel, adapted to be received in the chamber 21, covering theseating surface 13 and having a hole 24 aligned with the bore 19. 'lfheplate 22 is provided with a notch 25, con'iprising abutments in opposedrelation adapted to cooperate with the pin 23 to hold the said platefrom rotation. The resilient member 26 consists of a tempered springplate having a central perforation 2T and a periphery laterally slit andcrimped or stamped to form a spring plate having a plurality of tongues28 forwardly bent in pairs, and equally spaced in circular arrangement.The spring 26 is likewise provided with a hole or slot 29 adapted toreceive the pin 23 projecting through the said spring.

The cover member 30 comprises a liat circular portion 31 of sizesuilicient to cover the flange 20 and is provided with a rearwardlyextending annular liange 32, forming a cover member tor the chamber 21,of a slightly loose lit for a purpose further to be described. 'lliecover 30 is also provided with the forward motor supporting flanges 16,shaped to conform to the contour of the motor casing and adapted tosupport the latter by screws or other fastening means through the holes60. The cover member is also provided with the central bore 33 adaptedto be substantially aligned with the holes 24, 27 and bore 19 when inassembled relation, and the said cover member is also provided with theperforation 34 slightly oblong in shape or larger than the pin 23,adapted to receive the pin 23 when in assembled relation, but permittinga slight amount oi rotary movement about the axis of the. bore 19. 'lhecover member 30 and the seat 18 are held in assembled relation with thefriction plate 2 2 and the resilient member 26 inside the .chamber 21 bythe hollow screw bolt 35, provided with screw threads 36 to be threadedin the bore 19, and with the head 37 and the slot 8 i'or facilitatingits removal. In order to permit a slight amount of movement in alldirections between the supporting cover 30 and the rigid seating surface18 with its screw bolt 35, the bore 33 need only be made slight-lylarger than the bolt 35, but I prefer also to form the bearing portionof the head 38 with the curved cross section 38a and likewise to providea curved annular seat 39 on the said head in the cover 30, as well asallowing play between the bolt 35 and the bore 33, thus providing alimited universal joint between said cover and bolt.

In assembling the structure shown in F igure 3, the plate 22 is firstplaced in the chamber 21, with the slot 25 receiving the pin 23; thespring 26 is superimposed on the plate 22 in the same manner, and thecover 30 placed over both plate and spring with the pin 23 in theaperture 34 and the flange 32 loosely surrounding the flange 20. Thescrew bolt 35 is then inserted through the bores 33, 27 and 24, and isthreaded into the bore 19 to such position as will tension the springtongues 28 toward the plane of the liat portions of the spring 26, butwill still permit a further tensiomng, maintaining the inside coversurface 4t) in a slightly spaced relation to the flange 20. '1`he springplate will then hold the cover 3U lirml y against the shoulder 33a ofthe bolt 35, but due to the limited universal joint and play providedbetween the bolt 35 and 'bore 33, and between the cover 30 and theflange 20, thesupporting plate 30 may be moved slightly in any directionrelative to its support and is licxibl y and resiliently mounted. '1`heelongation or play of the hole 34 about the pin 33 also permits a slightrotary or swivel motion which allows motor vibration in all directions.lSy means of the foregoing combination, l provide a flexible andresilient motor support which absorbs and dampens the vibrationsincident to the motor, thereby greatly reducing the wear on the bearingsand the noise ot' operation, particularly in the case of motors having along stirrer shaft. The supply conductors are brought through theopening provided by the hollow bolt 35, providing4 a concealed andprotected system of wiring which is also of great advantage.

In the modification illustrated in Figure 4 l have shown my inventionadapted to be used with helical springs, instead of the spring plate 26,and my invent-ion is susceptible of many different embodiments includingany form of spring, as the flat spring shown in Figure 7, helicalsprings, flexible metal gaskets', rubber gaskets, or any resilient meansbetween the motor and column. In this embodiment, the friction plate 22may also be used but is not required, as the springs 41 may be seated inthe cylindrical bores 42 in the seating surface 18, the forward end ofthe springs 4l bearing directly on the rear face of the cover 30 whichmay also be provided with similar sockets. The assembly may be held inresilient spaced relation by a plurality of screw bolts screwed in bores43 and extending through the holes 44 but in such case the holes 44should be made slightly larger than the said bolts to permit therequisite amount of play. The assembly and cooperation of the parts ofthis embodiment is similar to that previously described.

In Figure 5 I have shown another modification of my invention as appliedto the tubular standard member. The tubular standard member 45 isprovided at its upper end with a fiat supporting plate 46 extendingsubstantially at right angles to the said standard. The said plate isadapt-ed to be received in the cover member 47, also provided with amotor supporting iange 49 and the plate 47 comprises the'top cover plate54 and a depending flange 55. The said cover may be surmounted by theball grip 50 for use in manual manipulation of the standard in slidingthe cover and standard, and means for preventing rotat-ion of saidfriction plate.

7. In a drink mixer of the class described, the combination of asupporting standard having a. cup shaped recess formed therein, with acover for said cup having flanges for attachment of a motor casing, afriction plate in the bottom of said cup, spring means in said cupengaging said cover at a plurality of points, a. universal jointconnecting said cover and standard, and means for preventing rotation ofsaid friction plate, and limiting rotative movement of said cover onsaid cup.

8. In a drink mixer of the class described, the combination of asupporting standard having a. cup shaped recess formed therein, with acover for said cup having flanges for attachment of a motor casing, anda universal joint connecting said cover and standard, said joint andstandard being hollow to provide a continuous conduit for electricalconductors.

9. In a drink mixer of the class described, the combination of a hollowsupporting standard having a cup shaped recess forming a seating surfaceand a threaded aperture centrally located therein, a cover for said cuphaving an enclosing flange about said cup and an aperture aligned withsaid first mentioned aperture, resilient means between said cup andcover and a hollow screw bolt in said threaded aperture having a limiteduniversal movement with said cover.

10. In a drink mixer of the class described, the combination of a hollowsupporting standard having a cup shaped seating surface and a threadedaperture centrally located thereinl a cover for said cup having anenclosing flange about said cup and an en larged aperture aligned withsaid first mentioned aperture, resilient means between said cup andcover, and a hollow threaded member passing through said enlargedaperture and threaded in said first mentioned aperture, said memberhaving a head with a spherical surface beneath the same, and said coverhaving a complementary surface to cooperate therewith to form a limiteduniversal joint.

11. In a drink mixer of the class described, the combination of a hollowsupporting standard having a cup shaped seating surface and a lthreadedaperture centrally located therein?, a cover for said cup having anenclosing flange about said cup and an enlarged aperture aligned withsaid first mentioned aperture, spring means in said cup having aplurality of points of engagement between said cup and cover and holdingsaid -cover out of contact with said cup, and a hollow threaded memberpassing through said enlarged aperture and threaded in said firstmentioned aperture, said member having a head with a spherical surfacebeneath the same, and said 'cover having a complementary surface toco-operate therewith to form a limited universal joint.

12. In a drink mixer of the class described, the combination of a hollowsupporting standard having a cup shaped seating surface and a threadedaperture centrally located therein, a cover for said cup having anenclosing flange about said cup and an enlarged aperture aligned withsaid first mentioned aperture, spring means in said cup having aplurality of points of engagement between said cup and cover and holdingsaid cover out of contact with said cup, a hollow threaded memberpassing through said enlarged aperture and threaded in said firstmentioned aperture, said member having a head with a spherical surfacebeneath the same and said cover having a complementary surface toco-operate therewith to form a limited universal joint, and a pin insaid cup passing through an enlarged aperture in said cover to limit itsrotative movement.

I 13. In a drink mixer of the class described, the combination of ahollow supporting standard having a cup shaped seating surface and athreaded aperture centrally located therein, a cover for said cup havingan enclosing flange about said cup and an enlarged aperture aligned withsaid first mentioned aperture, spring means in said cup having aplurality of points of' engagement between said cup and cover andholding said cover out of Contact with said cup, a hollow threadedmember passing through said enlarged aperture and threaded in said firstmentioned aperture, said member having a head with a spherical surfacebeneath the same and said cover having a complementary surface to co-loperate therewith to form a limited'universal joint, a pin in said cuppassing through an enlarged aperture in said cover to limit its rotativemovement, curved attaching flanges on said cover and a motor casingsupported on said flanges.

14. In a drink mixer, the combination of a rigid support, an electricmotor comprising a casing, an agitator-shaft depending from and drivenby the motor, a bracket removably secured to the motor casing, and meansfor connecting the motor to the support comprising a resilient diaphragmconfined between the support and the bracket.

15. In a drink mixer, the combination of a rigid support, an electricmotor comprising a casing, an agitator-shaft depending from and drivenby the motor, a bracket removably secured to the motor casing, and meansfor connecting the motor to the support comprising a resilient diaphragmremovably secured between the support and the bracket.

16. vIn a drink mixer, the combination of a rigidsupport, an electricmotor comprising a casing, an agitator-shaft depending from and drivenby the motor, a bracket removably secured to the motor casing, and meanssame upward and downward. The plate 46 and the cover 47 as viewed fromabove may be of any conformation not permitting relative rotationbetween the said parts when in assembled relation, except such limitedmotion as is provided by the play between these elements. A spring 51 ofany conformation adapted to hold the cover plate 54 and the plate 46 inparallel spaced relation is interposedbetween said cover and plate andthe hole is held in assembled relation by the screw 54, threaded in theplate 46 and passing through the enlarged hole 52 in the cover plate 54.

In the modification shown in Figure 6 I have shown a tubular standardwith a T- shaped union for adapting said standard to the same flexiblemounting used in Figures 1 to 4. The tubular standard 56 supports thespecial T union 57 by screw\\threads or other convenient fastening meansand the upper end of the T union 57 is closed by the ball grip 50. Thestem of' the T union 57, the right side in Figure 6, is provided with aflat circular seating surface 18, which is centrally b-ored and threadedas at 19, for the reception of the hollow screw bolt 35 of a similarstructure of the bolt already described. The pin 23is seated in asurface 18 and the spring 26 and supporting cover 58 cooperate withthese parts as in the previous embodiments, except that the frictionplate may be omitted where the surface 18 is machined or where for otherreasons a friction plate is unnecessary, and it will be noted that asthe seating surface here is the end of a fiat cylinder, the casingmember for the spring is provided by a longer flange 32 on thesupporting cover. In this modification, as in others, it is essentialthat a limited amount of play be permitted between the cover 58 and thebolt 35 as well as between the cover 58 and the eX- terior walls 59 ofthe seating surface 18, and the supporting cover is resiliently held inspaced relation to the seating surface 18 by the tension of the spring36 against t-be bolt 35. The bolt 35 and cover 58 may be likewiseprovided with a limited universal joint, and each of the modificationsillustrated may be l adapted interchangeably for use with either coil orflat springs by providing the bores 42 for helical springs.

It should be also noted that any number of springs may be used down to asingle large helical spring disposedy about the central bolt 53,provided the spring or springs are so arranged as to resiliently supportthe cover 30 against vibration in all directions and provided suflicientpoints of contact are. present between the said springs, the seatingsurface and the cover to resiliently hold the cover in parallel spacedrelation tothe seating surface. y

, The invention is not to be understood as restricted to the details setforth, since these may be modified within the scope of the appendedclaims without departing from the spirit and scope of the invention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States, is:

1. In a drink mixer ofthe class described, a rigid supporting standardhaving a seating surface, a friction plate on said surface,.a resilientmember on said frictionplate, a loose casing member for surrounding saidseating surface and enclosing said plate and spring, and an adjustablestop member resiliently holding said casing in spaced relation to saidseating surface.

2. In a drink mixer of the class described, a rigid supporting standardhaving a seating surface, a friction plate on said surface, a resilientmember on said friction plate, a loose casing member for surroundingsaid seating surface and enclosin said plate and spring, and a stopmember trough said casing, plate and spring, providing a ball and socketconnection between said casing and standard, and holding the same inspaced relation.

3. In a drink mixer of the class described, a rigid. supporting standardhaving a seating surface, a friction plate on said surface, a. resilientmember on said friction plate, a loose casing member for surroundingsaid seating surface and enclosing said plate rand spring, a stop memberthrough said casing, plate and spring, providing a ball and socketconnection between said casing and standard and holding the same inspaced relation, and a pin on said standard extending through saidfriction plate, spring and casing, permitting slight rotation of saidcasingon said stop.

4. In a. drink miXer of the class described, the combination of asupporting standard having a cup shaped recess formed therein, a coverfor said cup having flanges for attachment of a motor casing, auniversal joint connecting said lcover and standard, and spring mea-nsin said cup engaging said cover at a plurality of points.

5. In a drink mixer of the class described, the combination of asupporting standard having a cup shaped recess formed therein, with acover for said cup having flanges for attachment of a motor casing, afriction plate in the bottom of said cup, spring means in said cupengaging saidcover at a plurality of points, and a universal jointconnecting said cover and standard.

6. In a drink mixer of the class described, the combination of asupporting standard having a cup shaped recess formed therein, with acover for said cup having flanges for attachment of a motor casing, afriction plate in the bottom of said cup, spring means 1n y forconnecting the motor to the support, comprising a resilient diaphragmenclosed between the support and the bracket.

17. In a. drink mixer, the combination of a rigid supporting standard,having a forwardly extending upper end, an electric motor having acasing, an agitator shaft depending from and driven by the motor, abracket to which the back of the motor casing is removably secured, andresilient means for connecting the back of the bracket to the upper endof the standard.

In witness whereof, I hereunto subscribe my naine this 24th day ofAugust, 1926.

HARRISON D. FLEGEL.

